Forcefield analysis is an organizational development intervention $\_\_\_\_\_\_.$

a$.$ technique that brings together participants from all parts of the organization to problem solve or take advantage of opportunities

b$.$ that diagrams the current level of performance, the forces hindering change, and the forces driving toward change

c$.$ in which the change agent makes a direct recommendation for change

d$.$ that uses a questionnaire to gather data to use as the basis for change